400 Mb/s ADC

On Fri, 21 Nov 2003 08:29:08 -0800, Paul Smith wrote:

> Ulf Samuelsson wrote:
> 
> 
>> If you want to get some real speed, then maybe something like the Atmel
>> TS8308500 (500 Mspl/s), TS8388B (1 Gspl/s) or TS83102G0B (Gspl/s) could
>> be of interest.
>> Going up to Giga Samples per second, would make your problem worse
>> though
>> :-)
>> 
>> http://www.atmel.com/dyn/products/datasheets.asp?family_id=611
>> 
>> 
> When did Atmel start making flash ADCs?  Can someone actually buy these
> now?  How much do they cost?
> 
> see:
> 
> http://dustbunny.physics.indiana.edu/~paul/hallDrd
> 
> for our "merely" 250 Msps particle physics project.
> 
> 
> Paul Smith
> Indiana University Physics
 
One of the articles listed a price of $795 for the 2 Gspl/s converter in 1000's
 
Peter Wallace

It doesn't necessarily have to be a big FPGA, it depends on the size of the FFT
as well as the required latency and throughput.  Size can also be reduced by
working with mixed fixed and floating point.  I've done a number of FFT designs
in FPGAs, some of which are in rather small devices.  There is a 4K point example
in an old 5v Virtex shown on the gallery page of my website.


dMon wrote:

> ...  throughput similar to what RAID drives do. As for FFT's they
> are done way faster in a FPGA than in any processor including DSP
> processors. The only problem is the cost of the FPGA if you need
> really big FFT's (4K 24 bit wide). The card I was working on was
> ...

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